1642303049 has 2 divisors, whose sum is σ = 1642303050. Its totient is φ = 1642303048.

The previous prime is 1642303043. The next prime is 1642303081. The reversal of 1642303049 is 9403032461.

It is an a-pointer prime, because the next prime (1642303081) can be obtained adding 1642303049 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1637659024 + 4644025 = 40468^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1642303049 - 2⁸ = 1642302793 is a prime.

It is not a weakly prime, because it can be changed into another prime (1642303043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821151524 + 821151525.

It is an arithmetic number, because the mean of its divisors is an integer number (821151525).

Almost surely, 2^1642303049 is an apocalyptic number.

It is an amenable number.

1642303049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642303049 is an equidigital number, since it uses as much as digits as its factorization.

1642303049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1642303049 is about 40525.3383576251. The cubic root of 1642303049 is about 1179.8254671002.

The spelling of 1642303049 in words is "one billion, six hundred forty-two million, three hundred three thousand, forty-nine".